simulated ---- artificial
sort --- type -- kind
staggering摇晃的; 犹豫的; 压倒的(多数) =overwhelming
string线, 绳子; 一行, 一系列 =series
swell -- enlargement --- expand
tract- area - terrain
symmetric 对称的，均衡的 --- balance
taper 逐渐变小 --- diminish --- 收缩
tenet --- principle/belief
turn = change
vast - immense - extensive
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